package com.itheima.interceptor;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Slf4j
//@Component
public class DemoInterceptor implements HandlerInterceptor {

    //controller资源方法运行之前运行 ---> 返回值: true , 放行 ; false , 不放行
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        log.info("DemoInterceptor ... preHandle .... ");
        return true;
    }

    //controller资源方法运行之后运行
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        log.info("DemoInterceptor ... postHandle .... ");
    }

    //最后运行的方法
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        log.info("DemoInterceptor ... afterCompletion .... ");
    }
}
